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Honeywell S03 Series Spring Return Direct Coupled Actuators

Series Spring Return Direct Coupled Actuators
S03

MS8103, MS4103, MS7503, MS7403 Spring Return Direct Coupled Actuators (DCA) are used within heating, ventilating, and air-conditioning (HVAC) systems. They can drive a variety of quarter-turn, final control elements requiring spring return fail-safe operation.

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Cat #Switch OperationControl SignalPower Supply and FrequencyDrive Time (seconds)VA Driving
MS8103A1030/U0Two Position SPST24Vac @ 50/60 Hz, +/-20% 24Vdc +/-10%457 VA
MS8103A1130/U1Two Position SPST24Vac @ 50/60 Hz, +/-20% 24Vdc +/-10%457 VA
MS4103A1030/U0Two Position SPST120/230 Vac @ 50/60 Hz, +/-10%4510 VA
MS4103A1130/U1Two Position SPST120/230 Vac @ 50/60 Hz, +/-10%4510 VA
MS7503A2030/U0(0)2-10 Vdc, Floating24Vac @ 50/60 Hz, +/-20% 24Vdc +/-10%907 VA
MS7503A2130/U1(0)2-10 Vdc, Floating24Vac @ 50/60 Hz, +/-20% 24Vdc +/-10%907 VA
MS7403A2030/U02-10, Floating, Economizer (3 kOhm, 3-Position)24Vac @ 50/60 Hz, +/-20% 24Vdc +/-10%907 VA
Humidity Ratings 5% to 95% R.H., Non-Condensing
Electrical Connections Field wiring 18 AWG (0.5 mm) to 14 AWG (1.5 mm) conductors (stranded or solid) and up to 2 - 14 AWG (1.5 mm) conductors (stranded) to screw terminals, located under the removable access cover.
Auxiliary Switch (One SPDT)
  • Switch adjustable from 0-95°
  • 500 uA Resistive at 5 Vdc (minimum)
  • 250 Vac, 8 A resistive, 3 A inductive
  • Mounting: Self-centering shaft adapter (shaft coupling)
  • Round damper shafts: 3/8 to 5/8 in. (9 to 16 mm)
  • Square damper shafts: 1/4 to 1/2 in. (6 to 13 mm)
  • Minimum Damper Shaft Length 1 in. (25 mm); 3 in.(76 mm) recommended.
    Spring Return Timing (at rated load) < 25 seconds @ -4°F to 130°F (-20°C to 55°C)
    < 60 seconds @ -22°F (-30°C)
    Stroke 95° ±3°, mechanically limited.
    Approvals
  • UL873
  • IEC 60730-1 and Part 2–14
  • UL1097 for Double Insulation
  • CE Certification Low Voltage Directive 2006/95/EC
  • CE EMC 2004/108/EC
  • C-Tick N314
  • Enclosure Ratings
  • IP54
  • NEMA 2
  • Flame Resistance UL94-5VA
  • Input Impedance 95 kOhms minimum.
    Feedback Signal 0(2)-10 Vdc, 3 mA minimum.
    Noise Rating at 1m (Maximum)
  • Driving
  • Floating/Modulating/Econ: < 40 dB(A)
  • 2-Position: < 50 dB(A)
  • Spring Return: < 60 dB(A)
  • Accessories
  • 27518 Balljoint (5/16 in.)
  • 103598 Balljoint (1/4 in.)
  • 27520A-E,G,H-L,Q Pushrod (5/16 in. diameter)
  • STRN-STRNRLF Water-tight Cable Gland/Strain-relief
  • Fitting (10 pack)
  • STRN-WMK-01 Wall Mount Kit
  • STRN-ECONO-01 Economizer Retrofit Kit
  • STRN-CRK-01 Crank Arm Kit
  • STRN-SCSA Self Centering Shaft Adapter
  • STRN-CA-01 Crank Arm (Non-Self-Centering)
  • STRN-CA-02 Crank Arm (Self-Centering)
  • STRN-BRKT Anti-Rotation Bracket
  • • Volume control dampers, mounted directly to the drive shaft or remotely (with the use of accessory hardware).
    • Quarter-turn rotary valves, such as ball or butterfly valves mounted directly to the drive shaft.
    • Linear stroke globe or cage valves mounted with linkages to provide linear actuation.



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